Tire sidewall



FIG. 1 is a side elevational view of a tire sidewall showing my new design;

FIG. 2 is an enlarged fragmentary view of the upper quadrant of FIG. 1;

FIG. 3 is an enlarged fragmentary view of the lower quadrant of FIG. 1; and,

FIG. 4 is a perspective view thereof.

The broken lines defining the tire tread and inner bead represent unclaimed environmental subject matter; the broken lines immediately adjacent the solid line showing of the tire sidewall represent the boundaries of the claimed design but form no part thereof. 

The ornamental design for a tire sidewall, as shown and described. 